805113851 has 2 divisors, whose sum is σ = 805113852. Its totient is φ = 805113850.

The previous prime is 805113797. The next prime is 805113899. The reversal of 805113851 is 158311508.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 805113851 - 2⁶ = 805113787 is a prime.

It is a super-3 number, since 3×805113851³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (805113151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402556925 + 402556926.

It is an arithmetic number, because the mean of its divisors is an integer number (402556926).

Almost surely, 2^805113851 is an apocalyptic number.

805113851 is a deficient number, since it is larger than the sum of its proper divisors (1).

805113851 is an equidigital number, since it uses as much as digits as its factorization.

805113851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 32.

The square root of 805113851 is about 28374.5282075315. The cubic root of 805113851 is about 930.2915996996.

The spelling of 805113851 in words is "eight hundred five million, one hundred thirteen thousand, eight hundred fifty-one".